Gas lock-cock.



J. T. CLAYTDN.

GAS LOCK COCK.

APPLICATION FILED Nov.1, 1909.

95278s Patented Mar.22,1910.

ANDREW s. GRAHAM C0. PuoTo-LITNOGHANERS, wAsHlNGToN D c JOI-1N THOMASCLAYTON, 0F CHICAGO, ILLINOIS.

GAS LOCK-COCK.

Specification of Letters Patent.

Application filed November 1, 1909.

T 0 all whom it may concern:

Be it known that I, JOHN T. CLAYTON, a citizen of the United States,residing at Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improvements in Gras Lock-Cocks, ofwhich the following is a specification.

My invention relates to improvements in gas lock cocks designed to beused in gas systems where two or more persons have access to the systemand it is desired that but one person shall have access to a certainpart of said system such for instance as a portion of said systemincluding an individual gas n'ieter.

rihe invention has for its object the production of a gas lock cockadapted to such use and of improved construction and operation, andconsists in the combination and arrangement of parts hereinafterdescribed and claimed.

My invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and in which,

Figure 1 is a longitudinal section of a gas lock cock embodying myinvention, l `ig. 2, a section at right angles to Fig. 1 but showing thevalve plug in a different position, and Fig. 3, a top plan view of thelocking arm employed in the cock.

In the preferred form of construction as illustrated in the drawings asuitable casing 1 is provided with suitable pipe fittings 2 and 3 forthe purpose of being coupled into a gas system. In casing 1 is asuitable socket adapted to receive and nicely fitthe tapered valve plug4 which is hollow and is provided with oppositely disposed ports 5. l

At its upper end plug 4 is provided with a handle lever 6 formedintegrally therewith. At its lower end plug 4 carries a cylindricalprojection 7 having a fiattened side 8 and concentric with saidprojection, a threaded bolt 9. A locking arm 10 is provided with aprojection 11 adapted to enter the lower end of the socket in casing 1,and said arm and projection are provided with an opening 12 having aflattened side 12 and adapted to engage the flattened side S ofprojection 7 to cause arm 10 to be fixed against rotation relatively toplug 4. Arm 10 is secured in position by means of nut 9 taking over bolt9. By this construction it will be seen that Patented Mar. 22, 1910nserial No. 525,796.

4 by means of the flattened side S that it will X register with lug 13when the valve plug 4 is turned to closing position as illustrated in Fig. 2. By this construction it will be seen that when one individualisthrough using passed through said cock, the cock may be turned to andlocked in closing position to exclude others from the use of such gas.

lVhile I have illustrated and described the preferred form ofconstruction for carrying my invention into effect this is capable ofvariation and modification without departing from the spirit of myinvention. I therefore do not wish to be limited to the exact details ofconstruction set forth but desire to avail myself of such variations andmodifications as come within the scope of the appended claims.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

1. In a gas lock cock, the combination With a casing having a suitablevalve socket therein, of a valve plug fitting said socket and providedwith ports; a handle lever formed integral with said plug; a locking lugformed integral with said casing; a cylindrical projection on said plug,provided with-a flattened side; a locking arm having a projectionadapted to enter said socket and an opening adapted to lit over saidprojection; a threaded bolt on said plug; a nut adapted to secure saidarm in position; and means for locking said arm and lug together,substantially as described.

2. In a gas lock cock, the combination with a casing having a taperedvalve socket extending therethrough, of a tapered valve plug fittingsaid socket but terminating a short distance from the smaller endthereof; a handle lever formed integral with said plug; a cylindricalprojection on the end of said plug and provided with a flattened side; alocking arm having a projection adapted to enter said socket and abutthe end of said plug, the said projection and arm being provided with anopening adapted to fit snugly In testimony whereof I have signed my oversaid plug projection and the said plug name tio this specification inthe presence of projection being of a length somewhat less than thelength of said opening; a threaded stud on said plug,` projection; and anut engaging said stud to secure the plug and arm in position,substantially as described.

two subscribing Witnesses.

JOHN THOMAS CLAYTON. Witnesses:

P. K. CLAYTON, WM. HEDRICH.

